1085432415805 has 32 divisors (see below), whose sum is σ = 1313493891840. Its totient is φ = 861067791360.

The previous prime is 1085432415791. The next prime is 1085432415811. The reversal of 1085432415805 is 5085142345801.

1085432415805 is a nontrivial binomial coefficient, being equal to C(1473386, 2).

It is not a de Polignac number, because 1085432415805 - 2⁷ = 1085432415677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 337403557 + ... + 337406773.

It is an arithmetic number, because the mean of its divisors is an integer number (41046684120).

Almost surely, 2^{1085432415805} is an apocalyptic number.

1085432415805 is the 1473385-th triangular number and also the 736693-rd hexagonal number.

1085432415805 is the 491129-th centered nonagonal number.

It is an amenable number.

1085432415805 is a deficient number, since it is larger than the sum of its proper divisors (228061476035).

1085432415805 is a wasteful number, since it uses less digits than its factorization.

1085432415805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its (nonzero) digits is 768000, while the sum is 46.

The spelling of 1085432415805 in words is "one trillion, eighty-five billion, four hundred thirty-two million, four hundred fifteen thousand, eight hundred five".